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CompletionStrategy.c
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CompletionStrategy.c
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#include "CompletionStrategy.h"
#include "ABox.h"
#include "Node.h"
#include "Individual.h"
#include "Literal.h"
#include "Edge.h"
#include "DependencySet.h"
#include "KnowledgeBase.h"
#include "DependencyIndex.h"
#include "Params.h"
#include "ReazienerUtils.h"
#include "Role.h"
#include "ExpressionNode.h"
#include "QueueElement.h"
#include "CompletionQueue.h"
#include "RBox.h"
#include "TBox.h"
#include "Node.h"
#include "Clash.h"
#include "Datatype.h"
#include <limits.h>
extern KnowledgeBase* g_pKB;
extern ExprNode* EXPRNODE_TOP;
extern DependencySet DEPENDENCYSET_EMPTY;
extern DependencySet DEPENDENCYSET_INDEPENDENT;
extern int g_iCommentIndent;
CompletionStrategy::CompletionStrategy(ABox* pABox, Blocking* pBlocking)
{
m_pABox = pABox;
m_pBlocking = pBlocking;
m_bMerging = FALSE;
}
void CompletionStrategy::initialize()
{
START_DECOMMENT2("CompletionStrategy::initialize");
DECOMMENT1("Branch size = %d\n", m_pABox->m_aBranches.size());
for(BranchList::iterator i = m_pABox->m_aBranches.begin(); i != m_pABox->m_aBranches.end(); i++ )
{
Branch* pBranch = (Branch*)*i;
pBranch->m_pCompletionStrategy = this;
}
if( m_pABox->isInitialized() )
{
bool bFirst = TRUE;
for(ExprNodes::iterator i = m_pABox->m_aNodeList.begin(); i != m_pABox->m_aNodeList.end(); i++ )
{
ExprNode* pExprNode = (ExprNode*)*i;
Expr2NodeMap::iterator iFind = m_pABox->m_mNodes.find(pExprNode);
if( iFind == m_pABox->m_mNodes.end() )
continue;
Node* pNode = (Node*)iFind->second;
if( !pNode->isIndividual() )
continue;
Individual* pN = (Individual*)pNode;
if( pN->isMerged() )
continue;
if( bFirst )
{
applyUniversalRestrictions(pN);
bFirst = FALSE;
}
applyAllValues(pN);
if( pN->isMerged() )
continue;
applyNominalRule(pN);
if( pN->isMerged() )
continue;
applySelfRule(pN);
//CHW-added for inc. queue must see if this is bad
for(EdgeVector::iterator j = pN->m_listOutEdges.m_listEdge.begin(); j != pN->m_listOutEdges.m_listEdge.end(); j++ )
{
Edge* pEdge = (Edge*)*j;
if( pEdge->m_pTo->isPruned() )
continue;
applyPropertyRestrictions(pEdge);
if( pN->isMerged() )
break;
}
}
END_DECOMMENT("CompletionStrategy::initialize");
return;
}
m_pABox->m_iCurrentBranchIndex = 0;
DECOMMENT("ABox.Branch set to 0");
for(NodeMerges::iterator i = m_pABox->m_listToBeMerged.begin(); i != m_pABox->m_listToBeMerged.end(); i++ )
m_aMergeList.push_back((NodeMerge*)*i);
if( m_aMergeList.size() > 0 )
mergeFirst();
for(ExprNodes::iterator i = m_pABox->m_aNodeList.begin(); i != m_pABox->m_aNodeList.end(); i++ )
{
ExprNode* pExprNode = (ExprNode*)*i;
printExprNodeWComment("Node=", pExprNode);
Expr2NodeMap::iterator iFind = m_pABox->m_mNodes.find(pExprNode);
if( iFind == m_pABox->m_mNodes.end() )
continue;
Node* pNode = (Node*)iFind->second;
if( !pNode->isIndividual() )
continue;
Individual* pN = (Individual*)pNode;
if( pN->isMerged() )
continue;
pN->setChanged(TRUE);
applyUniversalRestrictions(pN);
applyUnfoldingRule(pN);
applySelfRule(pN);
for(EdgeVector::iterator j = pN->m_listOutEdges.m_listEdge.begin(); j != pN->m_listOutEdges.m_listEdge.end(); j++ )
{
Edge* pEdge = (Edge*)*j;
if( pEdge->m_pTo->isPruned() )
continue;
applyPropertyRestrictions(pEdge);
if( pN->isMerged() )
break;
}
}
if( m_aMergeList.size() > 0 )
mergeFirst();
m_pABox->m_iCurrentBranchIndex = m_pABox->m_aBranches.size()+1;
m_pABox->m_iTreeDepth = 1;
m_pABox->m_bChanged = TRUE;
m_pABox->m_bIsComplete = FALSE;
m_pABox->m_bInitialized = TRUE;
END_DECOMMENT("CompletionStrategy::initialize");
}
void CompletionStrategy::restore(Branch* pBranch)
{
START_DECOMMENT2("CompletionStrategy::restore");
m_pABox->setBranch(pBranch->m_iBranch);
m_pABox->setClash(NULL);
m_pABox->m_iAnonCount = pBranch->m_iAnonCount;
m_pABox->m_bRulesNotApplied = TRUE;
m_aMergeList.clear();
if( PARAMS_USE_COMPLETION_QUEUE() )
{
ExprNodeSet setEffected;
m_pABox->m_pCompletionQueue->removeEffect(pBranch->m_iBranch, &setEffected);
//First remove all nodes from the node map that were added after this branch
for(ExprNodes::iterator i = m_pABox->m_aNodeList.begin(); i != m_pABox->m_aNodeList.end(); i++ )
{
ExprNode* pNext = (ExprNode*)*i;
m_pABox->m_mNodes.erase(pNext);
setEffected.erase(pNext);
}
//Next restore remaining nodes that were effected during the branch after the one we are restoring too.
//Currenlty, I'm tracking the effected nodes through the application of the completion rules.
for(ExprNodeSet::iterator i = setEffected.begin(); i != setEffected.end(); i++ )
{
ExprNode* pX = (ExprNode*)*i;
Node* pNode = m_pABox->getNode(pX);
pNode->restore(pBranch->m_iBranch);
}
}
else
{
//Below is the old code
int iIndex = 0;
int iSize = m_pABox->m_aNodeList.size();
for(ExprNodes::iterator i = m_pABox->m_aNodeList.begin(); i != m_pABox->m_aNodeList.end(); i++, iIndex++ )
{
ExprNode* pX = (ExprNode*)*i;
Node* pNode = m_pABox->getNode(pX);
if( iIndex >= pBranch->m_iNodeCount )
m_pABox->m_mNodes.erase(pX);
else
pNode->restore(pBranch->m_iBranch);
}
}
//clear the nodelist as well
int iSize = m_pABox->m_aNodeList.size();
for(int i = pBranch->m_iNodeCount; i < iSize; i++ )
m_pABox->m_aNodeList.pop_back();
if( PARAMS_USE_COMPLETION_QUEUE() )
{
//reset the queues
m_pABox->m_pCompletionQueue->restore(pBranch->m_iBranch);
//This is new code that only fires all values for inds that are on the queue
m_pABox->m_pCompletionQueue->init(CompletionQueue::ALLLIST);
while( m_pABox->m_pCompletionQueue->hasNext(CompletionQueue::ALLLIST) )
{
QueueElement* pNext = (QueueElement*)m_pABox->m_pCompletionQueue->getNext(CompletionQueue::ALLLIST);
applyAllValues(pNext);
if( m_pABox->isClosed() )
break;
}
}
else
{
//Below is the old code for firing the all values rule
for(Expr2NodeMap::iterator i = m_pABox->m_mNodes.begin(); i != m_pABox->m_mNodes.end(); i++ )
{
Node* pN = (Node*)i->second;
if( !pN->isIndividual() ) continue;
Individual* pNode = (Individual*)pN;
applyAllValues(pNode);
}
}
if( !m_pABox->isClosed() )
m_pABox->validate();
END_DECOMMENT("CompletionStrategy::restore");
}
void CompletionStrategy::applyUniversalRestrictions(Individual* pNode)
{
START_DECOMMENT2("CompletionStrategy::applyUniversalRestrictions");
printExprNodeWComment("pNode=", pNode->m_pName);
addType(pNode, EXPRNODE_TOP, &DEPENDENCYSET_INDEPENDENT);
Expr2ExprSetPairList* pUC = g_pKB->m_pTBox->getUC();
if( pUC )
{
for(Expr2ExprSetPairList::iterator i = pUC->begin(); i != pUC->end(); i++ )
{
Expr2ExprSetPair* pPair = (Expr2ExprSetPair*)*i;
ExprNode* pC = (ExprNode*)pPair->first;
ExprNodeSet* pExplain = (ExprNodeSet*)pPair->second;
DependencySet* pDS = new DependencySet(pExplain);
addType(pNode, pC, pDS);
}
}
for(RoleSet::iterator r = g_pKB->m_pRBox->m_setReflexiveRoles.begin(); r != g_pKB->m_pRBox->m_setReflexiveRoles.end(); r++)
{
Role* pRole = (Role*)*r;
addEdge(pNode, pRole, pNode, pRole->m_pExplainReflexive);
}
END_DECOMMENT("CompletionStrategy::applyUniversalRestrictions");
}
void CompletionStrategy::applyUnfoldingRuleOnIndividuals()
{
START_DECOMMENT2("CompletionStrategy::applyUnfoldingRuleOnIndividuals");
for(Expr2NodeMap::iterator i = m_pABox->m_mNodes.begin(); i != m_pABox->m_mNodes.end(); i++ )
{
Node* pN = (Node*)i->second;
if( !pN->isIndividual() ) continue;
Individual* pNode = (Individual*)pN;
applyUnfoldingRule(pNode);
if( m_pABox->isClosed() )
break;
}
END_DECOMMENT("CompletionStrategy::applyUnfoldingRuleOnIndividuals");
}
void CompletionStrategy::applyUnfoldingRule(Individual* pNode)
{
START_DECOMMENT2("CompletionStrategy::applyUnfoldingRule(2)");
printExprNodeWComment("pNode=", pNode->m_pName);
if( !pNode->canApply(Node::ATOM) || m_pBlocking->isBlocked(pNode) )
{
END_DECOMMENT("CompletionStrategy::applyUnfoldingRule");
return;
}
int iSize = pNode->m_aTypes[Node::ATOM].size();
int iStartAt = pNode->m_iApplyNext[Node::ATOM], iIndex = 0;
for(ExprNodes::iterator i = pNode->m_aTypes[Node::ATOM].begin(); i != pNode->m_aTypes[Node::ATOM].end() && iIndex < iSize ; i++, iIndex++ )
{
ExprNode* pC = (ExprNode*)*i;
if( iIndex < iStartAt ) continue;
if( !PARAMS_MAINTAIN_COMPLETION_QUEUE() && pNode->getDepends(pC) == NULL )
continue;
applyUnfoldingRule(pNode, pC);
if( m_pABox->isClosed() )
{
END_DECOMMENT("CompletionStrategy::applyUnfoldingRule");
return;
}
// it is possible that unfolding added new atomic
// concepts that we need to further unfold
iSize = pNode->m_aTypes[Node::ATOM].size();
}
pNode->m_iApplyNext[Node::ATOM] = iSize;
END_DECOMMENT("CompletionStrategy::applyUnfoldingRule");
}
void CompletionStrategy::applyUnfoldingRule(Individual* pNode, ExprNode* pC)
{
START_DECOMMENT2("CompletionStrategy::applyUnfoldingRule");
printExprNodeWComment("pNode=", pNode->m_pName);
printExprNodeWComment("pC=", pC);
Expr2ExprSetPairList* pUnfoldingList = g_pKB->m_pTBox->unfold(pC);
if( pUnfoldingList )
{
DependencySet* pDS = pNode->getDepends(pC);
if( !PARAMS_MAINTAIN_COMPLETION_QUEUE() && pDS == NULL )
{
END_DECOMMENT("CompletionStrategy::applyUnfoldingRule");
return;
}
for(Expr2ExprSetPairList::iterator i = pUnfoldingList->begin(); i != pUnfoldingList->end(); i++ )
{
Expr2ExprSetPair* pPair = (Expr2ExprSetPair*)*i;
ExprNode* pUnfoldedConcept = (ExprNode*)pPair->first;
ExprNodeSet* pUnfoldingDS = (ExprNodeSet*)pPair->second;
DependencySet* pFinalDS = pDS->addExplain(pUnfoldingDS, m_pABox->m_bDoExplanation);
printExprNodeWComment("Unfolded Concept=", pUnfoldedConcept);
addType(pNode, pUnfoldedConcept, pFinalDS);
}
}
END_DECOMMENT("CompletionStrategy::applyUnfoldingRule");
}
void CompletionStrategy::applyUnfoldingRule(QueueElement* pElement)
{
Individual* pNode = m_pABox->getIndividual(pElement->m_pNode);
pNode = (Individual*)pNode->getSame();
if( pNode->isPruned() )
return;
if( m_pBlocking->isBlocked(pNode) )
{
//readd this to the queue in case the node is unblocked at a later point
//TODO: this will impose a memory overhead, so alternative techniques should be investigated
m_pABox->m_pCompletionQueue->add(pElement, CompletionQueue::ATOMLIST);
return;
}
ExprNode* pC = pElement->m_pLabel;
applyUnfoldingRule(pNode, pC);
}
void CompletionStrategy::applyLiteralRule(QueueElement* pElement)
{
Node* pNode = m_pABox->getNode(pElement->m_pNode);
if( pNode->isIndividual() )
return;
//get the actual literal
Literal* pLiteral = (Literal*)pNode;
pLiteral = (Literal*)pLiteral->getSame();
if( pLiteral->isPruned() )
return;
if( pLiteral->m_pValue )
return;
LiteralValueBranch* pNewBranch = new LiteralValueBranch(m_pABox,this, pLiteral, pLiteral->m_pDatatype);
addBranch(pNewBranch);
pNewBranch->tryNext();
}
void CompletionStrategy::applyLiteralRuleOnIndividuals()
{
START_DECOMMENT2("CompletionStrategy::applyLiteralRuleOnIndividuals");
for(Expr2NodeMap::iterator i = m_pABox->m_mNodes.begin(); i != m_pABox->m_mNodes.end(); i++ )
{
Node* pN = (Node*)i->second;
if( pN->isIndividual() ) continue;
Literal* pLit = (Literal*)pN;
if( pLit->m_pValue )
continue;
LiteralValueBranch* pNewBranch = new LiteralValueBranch(m_pABox,this, pLit, pLit->m_pDatatype);
addBranch(pNewBranch);
pNewBranch->tryNext();
if( m_pABox->isClosed() )
break;
}
END_DECOMMENT("CompletionStrategy::applyLiteralRuleOnIndividuals");
}
void CompletionStrategy::checkDatatypeCount(QueueElement* pElement)
{
Individual* pX = (Individual*)m_pABox->getNode(pElement->m_pNode);
pX = (Individual*)pX->getSame();
if( pX->isPruned() || (!pX->isChanged(Node::ALL) && !pX->isChanged(Node::MIN)) )
return;
checkDatatypeCount(pX);
}
void CompletionStrategy::checkDatatypeCountOnIndividuals()
{
START_DECOMMENT2("CompletionStrategy::checkDatatypeCountOnIndividuals");
for(Expr2NodeMap::iterator i = m_pABox->m_mNodes.begin(); i != m_pABox->m_mNodes.end(); i++ )
{
Node* pN = (Node*)i->second;
if( !pN->isIndividual() ) continue;
Individual* pNode = (Individual*)pN;
checkDatatypeCount(pNode);
if( m_pABox->isClosed() )
break;
}
END_DECOMMENT("CompletionStrategy::checkDatatypeCountOnIndividuals");
}
void CompletionStrategy::checkDatatypeCount(Individual* pX)
{
if( !pX->isChanged(Node::ALL) && !pX->isChanged(Node::MIN) )
return;
// for DatatypeProperties we have to compute the maximum number of
// successors it can have on the fly. This is because as we go on
// with completion there can be more concepts in the form all(dp, X)
// added to node label. so first for each datatype property collect
// all the different allValuesFrom axioms together
ExprNode2ExprNodesMap mapAllValues;
Expr2DependencySetMap mapDepends;
for(ExprNodes::iterator i = pX->m_aTypes[Node::ALL].begin(); i != pX->m_aTypes[Node::ALL].end(); i++ )
{
ExprNode* pAV = (ExprNode*)*i;
ExprNode* pR = (ExprNode*)pAV->m_pArgs[0];
ExprNode* pC = (ExprNode*)pAV->m_pArgs[1];
Role* pRole = g_pKB->getRole(pR);
if( !pRole->isDatatypeRole() )
continue;
DependencySet* pDS = NULL;
Expr2DependencySetMap::iterator iFind = mapDepends.find(pR);
if( iFind != mapDepends.end() )
pDS = (DependencySet*)iFind->second;
if( !PARAMS_MAINTAIN_COMPLETION_QUEUE() && pX->getDepends(pAV) == NULL )
continue;
ExprNodes* pRanges = NULL;
ExprNode2ExprNodesMap::iterator iFind2 = mapAllValues.find(pR);
if( iFind2 != mapAllValues.end() )
pRanges = (ExprNodes*)iFind2->second;
else
{
pRanges = new ExprNodes;
mapAllValues[pR] = pRanges;
pDS = &DEPENDENCYSET_EMPTY;
}
if( pC->m_iExpression == EXPR_AND )
{
for(int j = 0; j < ((ExprNodeList*)pC->m_pArgList)->m_iUsedSize; j++ )
pRanges->push_back(((ExprNodeList*)pC->m_pArgList)->m_pExprNodes[j]);
}
else
pRanges->push_back(pC);
pDS = pDS->unionNew(pX->getDepends(pAV), m_pABox->m_bDoExplanation);
mapDepends[pR] = pDS;
}
for(ExprNodes::iterator i = pX->m_aTypes[Node::MIN].begin(); i != pX->m_aTypes[Node::MIN].end(); i++ )
{
// mc stores the current type (the current minCard restriction)
ExprNode* pMC = (ExprNode*)*i;
ExprNode* pR = (ExprNode*)pMC->m_pArgs[0];
Role* pRole = g_pKB->getRole(pR);
ExprNode* pRange = pRole->m_pRange;
if( !pRole->isDatatypeRole() || pRange == NULL )
continue;
if( !PARAMS_MAINTAIN_COMPLETION_QUEUE() && pX->getDepends(pMC) == NULL )
continue;
ExprNodes* pRanges = NULL;
ExprNode2ExprNodesMap::iterator iFind2 = mapAllValues.find(pR);
if( iFind2 != mapAllValues.end() )
pRanges = (ExprNodes*)iFind2->second;
else
{
pRanges = new ExprNodes;
mapAllValues[pR] = pRanges;
mapDepends[pR] = &DEPENDENCYSET_INDEPENDENT;
}
pRanges->push_back(pRange);
}
for(ExprNode2ExprNodesMap::iterator i = mapAllValues.begin(); i != mapAllValues.end(); i++ )
{
ExprNode* pR = (ExprNode*)i->first;
Role* pRole = g_pKB->getRole(pR);
ExprNodes* pRanges = (ExprNodes*)i->second;
#if 0
int n = abox.getDatatypeReasoner().intersection( dt ).size();
if( n == ValueSpace.INFINITE || n == Integer.MAX_VALUE )
continue;
boolean clash = x.checkMaxClash( ATermUtils.makeNormalizedMax( r, n, ATermUtils.TOP_LIT ), DependencySet.INDEPENDENT );
if( clash )
return;
DependencySet dsEdges = x.hasDistinctRNeighborsForMax( role, n + 1, ATermUtils.TOP_LIT );
if( dsEdges != null ) {
DependencySet ds = (DependencySet) depends.get( r );
ds = ds.union( dsEdges, abox.doExplanation() );
abox.setClash( Clash.unexplained( x, ds ) );
return;
}
#endif
}
}
void CompletionStrategy::applySelfRule(Individual* pNode)
{
START_DECOMMENT2("CompletionStrategy::applySelfRule");
printExprNodeWComment("Node=", pNode->m_pName);
for(ExprNodes::iterator i = pNode->m_aTypes[Node::ATOM].begin(); i != pNode->m_aTypes[Node::ATOM].end(); i++ )
{
ExprNode* pC = (ExprNode*)*i;
if( !PARAMS_MAINTAIN_COMPLETION_QUEUE() && pNode->getDepends(pC) == NULL )
continue;
if( pC->m_iExpression == EXPR_SELF )
{
ExprNode* pPred = (ExprNode*)pC->m_pArgs[0];
Role* pRole = g_pKB->getRole(pPred);
addEdge(pNode, pRole, pNode, pNode->getDepends(pC));
if( m_pABox->isClosed() )
{
END_DECOMMENT("CompletionStrategy::applySelfRule");
return;
}
}
}
END_DECOMMENT("CompletionStrategy::applySelfRule");
}
/**
* Iterate through all the allValuesFrom restrictions on this individual and apply the
* restriction
*/
void CompletionStrategy::applyAllValues(Individual* pNode)
{
START_DECOMMENT2("CompletionStrategy::applyAllValues");
printExprNodeWComment("Node=", pNode->m_pName);
for(ExprNodes::iterator i = pNode->m_aTypes[Node::ALL].begin(); i != pNode->m_aTypes[Node::ALL].end(); i++ )
{
ExprNode* pAV = (ExprNode*)*i;
DependencySet* pAVDepends = pNode->getDepends(pAV);
if( !PARAMS_MAINTAIN_COMPLETION_QUEUE() && pNode->getDepends(pAV) == NULL )
continue;
applyAllValues(pNode, pAV, pAVDepends);
if( pNode->isMerged() || m_pABox->isClosed() )
{
END_DECOMMENT("CompletionStrategy::applyAllValues");
return;
}
// if there are self links through transitive properties restart
if( pNode->isChanged(Node::ALL) )
{
i = pNode->m_aTypes[Node::ALL].begin();
pNode->setChanged(Node::ALL, FALSE);
}
}
END_DECOMMENT("CompletionStrategy::applyAllValues");
}
void CompletionStrategy::applyAllValues(QueueElement* pElement)
{
Individual* pX = m_pABox->getIndividual(pElement->m_pNode);
if( pX->isPruned() || pX->isMerged() )
pX = (Individual*)pX->getSame();
if( pX->isPruned() )
return;
applyAllValues(pX);
}
/**
* Apply the allValues rule for the given type with the given dependency. The concept is in the
* form all(r,C) and this function adds C to all r-neighbors of x
*/
void CompletionStrategy::applyAllValues(Individual* pX, ExprNode* pAV, DependencySet* pDS)
{
START_DECOMMENT2("CompletionStrategy::applyAllValues(3)");
printExprNodeWComment("Node.X=", pX->m_pName);
printExprNodeWComment("AV=", pAV);
if( pAV->m_iArity == 0 )
assertFALSE("InternalReasonerException");
ExprNode* pP = (ExprNode*)pAV->m_pArgs[0];
ExprNode* pC = (ExprNode*)pAV->m_pArgs[1];
ExprNodeList* pRoleChain = NULL;
Role* pS = NULL;
if( pP == NULL && pAV->m_pArgList )
{
pRoleChain = createExprNodeList((ExprNodeList*)pAV->m_pArgList);
pS = g_pKB->getRole(pRoleChain->m_pExprNodes[0]);
pop_front(pRoleChain);
}
else
pS = g_pKB->getRole(pP);
EdgeList edges;
pX->getRNeighborEdges(pS, &edges);
DECOMMENT1("RNeighbor edge count=%d", edges.size());
for(EdgeVector::iterator i = edges.m_listEdge.begin(); i != edges.m_listEdge.end(); i++ )
{
Edge* pEdgeToY = (Edge*)*i;
Node* pY = pEdgeToY->getNeighbor(pX);
printExprNodeWComment("Edge2Y=", pY->m_pName);
DependencySet* pFinalDS = pDS->unionNew(pEdgeToY->m_pDepends, m_pABox->m_bDoExplanation);
if( pRoleChain == NULL || pRoleChain->m_iUsedSize == 0 )
{
applyAllValues(pX, pS, pY, pC, pFinalDS);
}
else
{
ExprNode* pAllRC = createExprNode(EXPR_ALL, pRoleChain, pC);
applyAllValues((Individual*)pY, pAllRC, pFinalDS);
}
if( pX->isMerged() || m_pABox->isClosed() )
{
END_DECOMMENT("CompletionStrategy::applyAllValues(3)");
return;
}
}
if( !pS->isSimple() )
{
for(ExprNodeListSet::iterator i = pS->m_setSubRoleChains.begin(); i != pS->m_setSubRoleChains.end(); i++ )
{
ExprNodeList* pChain = createExprNodeList((ExprNodeList*)*i);
ExprNode* pListExpr = createExprNode(EXPR_LIST, pChain);
DependencySet* pSubChainDS = pS->getExplainSub(pListExpr);
Role* pRole = g_pKB->getRole( pChain->m_pExprNodes[0] );
EdgeList edges;
pX->getRNeighborEdges(pRole, &edges);
if( edges.m_listEdge.size() > 0 )
{
pop_front(pChain);
ExprNode* pAllRC = createExprNode(EXPR_ALL, createExprNodeList(pChain), pC);
for(EdgeVector::iterator j = edges.m_listEdge.begin(); j != edges.m_listEdge.end(); j++ )
{
Edge* pEdgeToY = (Edge*)*j;
Node* pY = pEdgeToY->getNeighbor(pX);
DependencySet* pFinalDS = pDS->unionNew(pEdgeToY->m_pDepends, m_pABox->m_bDoExplanation)->unionDS(pSubChainDS, m_pABox->m_bDoExplanation);
applyAllValues(pX, pRole, pY, pAllRC, pFinalDS);
if( pX->isMerged() || m_pABox->isClosed() )
{
END_DECOMMENT("CompletionStrategy::applyAllValues(3)");
return;
}
}
}
}
}
END_DECOMMENT("CompletionStrategy::applyAllValues(3)");
}
void CompletionStrategy::applyAllValues(Individual* pSubj, Role* pPred, Node* pObj, ExprNode* pC, DependencySet* pDS)
{
START_DECOMMENT2("CompletionStrategy::applyAllValues(2)");
printExprNodeWComment("Subj=", pSubj->m_pName);
printExprNodeWComment("Obj=", pObj->m_pName);
printExprNodeWComment("C=", pC);
if( !pObj->hasType(pC) )
addType(pObj, pC, pDS);
END_DECOMMENT("CompletionStrategy::applyAllValues(2)");
}
void CompletionStrategy::applyAllValues(Individual* pSubj, Role* pPred, Node* pObj, DependencySet* pDS)
{
int iAllValuesSize = pSubj->m_aTypes[Node::ALL].size();
for(ExprNodes::iterator i = pSubj->m_aTypes[Node::ALL].begin(); i != pSubj->m_aTypes[Node::ALL].end(); i++ )
{
ExprNode* pAV = (ExprNode*)*i;
ExprNode* pP = (ExprNode*)pAV->m_pArgs[0];
ExprNode* pC = (ExprNode*)pAV->m_pArgs[1];
ExprNodeList* pRoleChain = NULL;
Role* pS = NULL;
if( pP == NULL && pAV->m_pArgList )
{
pRoleChain = createExprNodeList((ExprNodeList*)pAV->m_pArgList);
pS = g_pKB->getRole(pRoleChain->m_pExprNodes[0]);
pop_front(pRoleChain);
}
else
pS = g_pKB->getRole(pP);
if( pPred->isSubRoleOf(pS) )
{
DependencySet* pFinalDS = pSubj->getDepends(pAV)->unionNew(pDS, m_pABox->m_bDoExplanation)->unionDS(pS->getExplainSub(pPred->m_pName), m_pABox->m_bDoExplanation);
if( pRoleChain == NULL || pRoleChain->m_iUsedSize == 0 )
applyAllValues(pSubj, pS, pObj, pC, pFinalDS);
else
{
ExprNode* pAllRC = createExprNode(EXPR_ALL, pRoleChain, pC);
applyAllValues((Individual*)pObj, pAllRC, pFinalDS);
}
if( m_pABox->isClosed() )
return;
}
if( !pS->isSimple() )
{
DependencySet* pFinalDS = pSubj->getDepends(pAV)->unionNew(pDS, m_pABox->m_bDoExplanation);
for(ExprNodeListSet::iterator j = pS->m_setSubRoleChains.begin(); j != pS->m_setSubRoleChains.end(); j++ )
{
ExprNodeList* pChain = (ExprNodeList*)*j;
ExprNode* pListExpr = createExprNode(EXPR_LIST, pChain);
Role* pFirstRole = g_pKB->getRole(pChain->m_pExprNodes[0]);
if( !pPred->isSubRoleOf(pFirstRole) )
continue;
ExprNodeList* pNewChain = createExprNodeList(pChain);
pop_front(pNewChain);
ExprNode* pAllRC = createExprNode(EXPR_ALL, pNewChain, pC);
applyAllValues(pSubj, pPred, pObj, pAllRC, pFinalDS->unionDS(pFirstRole->getExplainSub(pPred->m_pName), m_pABox->m_bDoExplanation)->unionDS(pS->getExplainSub(pListExpr), m_pABox->m_bDoExplanation));
if( pSubj->isMerged() || m_pABox->isClosed() )
return;
}
}
if( pSubj->isMerged() )
return;
pObj = pObj->getSame();
// if there are self links then restart
if( iAllValuesSize != pSubj->m_aTypes[Node::ALL].size() )
{
i = pSubj->m_aTypes[Node::ALL].begin();
iAllValuesSize = pSubj->m_aTypes[Node::ALL].size();
}
}
}
void CompletionStrategy::applyNominalRule(Individual* pNode)
{
if( PARAMS_USE_PSEUDO_NOMINALS() )
return;
for(ExprNodes::iterator i = pNode->m_aTypes[Node::NOM].begin(); i != pNode->m_aTypes[Node::NOM].end(); i++ )
{
ExprNode* pNC = (ExprNode*)*i;
DependencySet* pDS = pNode->getDepends(pNC);
if( !PARAMS_MAINTAIN_COMPLETION_QUEUE() && pDS == NULL )
continue;
applyNominalRule(pNode, pNC, pDS);
if( m_pABox->isClosed() || pNode->isMerged() )
return;
}
}
void CompletionStrategy::applyNominalRuleOnIndividuals()
{
START_DECOMMENT2("CompletionStrategy::applyNominalRuleOnIndividuals");
for(Expr2NodeMap::iterator i = m_pABox->m_mNodes.begin(); i != m_pABox->m_mNodes.end(); i++ )
{
Node* pN = (Node*)i->second;
if( !pN->isIndividual() ) continue;
Individual* pNode = (Individual*)pN;
if( !pNode->canApply(Node::NOM) || m_pBlocking->isBlocked(pNode) )
continue;
applyNominalRule(pNode);
pNode->setChanged(Node::NOM, FALSE);
if( m_pABox->isClosed() )
break;
if( pNode->isMerged() )
applyNominalRule((Individual*)pNode->getSame());
}
END_DECOMMENT("CompletionStrategy::applyNominalRuleOnIndividuals");
}
void CompletionStrategy::applyNominalRule(QueueElement* pElement)
{
if( PARAMS_USE_PSEUDO_NOMINALS() )
return;
//get individual from the queue element - need to chase it down on the fly,
//and return if its pruned
Individual* pY = m_pABox->getIndividual(pElement->m_pNode);
pY = (Individual*)pY->getSame();
if( m_pBlocking->isBlocked(pY) )
{
//readd this to the queue in case the node is unblocked at a later point
//TODO: this will impose a memory overhead, so alternative techniques should be investigated
m_pABox->m_pCompletionQueue->add(pElement, CompletionQueue::NOMLIST);
return;
}
if( pY->isPruned() )
return;
ExprNode* pNC = pElement->m_pLabel;
DependencySet* pDS = pY->getDepends(pNC);
if( !PARAMS_MAINTAIN_COMPLETION_QUEUE() && pDS == NULL )
return;
applyNominalRule(pY, pNC, pDS);
}
void CompletionStrategy::applyNominalRule(Individual* pY, ExprNode* pNC, DependencySet* pDS)
{
START_DECOMMENT2("CompletionStrategy::applyNominalRule");
printExprNodeWComment("NC=", pNC);
m_pABox->copyOnWrite();
ExprNode* pNominal = (ExprNode*)pNC->m_pArgs[0];
// first find the individual for the given nominal
Individual* pZ = m_pABox->getIndividual(pNominal);
if( pZ == NULL )
{
if( isAnonNominal(pNominal) )
pZ = m_pABox->addIndividual(pNominal);
else
assertFALSE("Nominal 'pNominal' not found in KB!");
}
// Get the value of mergedTo because of the following possibility:
// Suppose there are three individuals like this
// [x,{}],[y,{value(x)}],[z,{value(y)}]
// After we merge x to y, the individual x is now represented by
// the node y. It is too hard to update all the references of
// value(x) so here we find the actual representative node
// by calling getSame()
if( pZ->isMerged() )
{
pDS = pDS->unionNew(pZ->getMergeDependency(TRUE), m_pABox->m_bDoExplanation);
pZ = (Individual*)pZ->getSame();
if( m_pABox->m_iCurrentBranchIndex > 0 && PARAMS_USE_COMPLETION_QUEUE() )
m_pABox->addEffected(m_pABox->m_iCurrentBranchIndex, pZ->m_pName);
}
if( pY->isSame(pZ) )
{
END_DECOMMENT("CompletionStrategy::applyNominalRule(1)");
return;
}
if( pY->isDifferent(pZ) )
{
pDS = pDS->unionNew(pY->getDifferenceDependency(pZ), m_pABox->m_bDoExplanation);
if( m_pABox->m_bDoExplanation )
m_pABox->setClash(Clash::nominal(pY, pDS, pZ->m_pName));
else
m_pABox->setClash(Clash::nominal(pY, pDS));
END_DECOMMENT("CompletionStrategy::applyNominalRule(2)");
return;
}
mergeTo(pY, pZ, pDS);
END_DECOMMENT("CompletionStrategy::applyNominalRule(3)");
}
void CompletionStrategy::applyGuessingRuleOnIndividuals()
{
START_DECOMMENT2("CompletionStrategy::applyGuessingRuleOnIndividuals");
// CHECK HERE: CompletionStrategy.c
for(Expr2NodeMap::iterator i = m_pABox->m_mNodes.begin(); i != m_pABox->m_mNodes.end(); i++ )
{
Node* pN = (Node*)i->second;
if( !pN->isIndividual() ) continue;
Individual* pNode = (Individual*)pN;
if( pNode->isBlockable() )
continue;
for(ExprNodes::iterator j = pNode->m_aTypes[Node::MAX].begin(); j != pNode->m_aTypes[Node::MAX].end(); j++ )
{
ExprNode* pMC = (ExprNode*)*j;
applyGuessingRule(pNode, pMC);
if( m_pABox->isClosed() )
{
END_DECOMMENT("CompletionStrategy::applyGuessingRuleOnIndividuals");
return;
}
if( pNode->isPruned() )
continue;
}
}
END_DECOMMENT("CompletionStrategy::applyGuessingRuleOnIndividuals");
}
void CompletionStrategy::applyGuessingRule(QueueElement* pElement)
{
Individual* pX = m_pABox->getIndividual(pElement->m_pNode);
pX = (Individual*)pX->getSame();
if( pX->isBlockable() )
{
//readd this to the queue in case the node is unblocked at a later point
//TODO: this will impose a memory overhead, so alternative techniques should be investigated
m_pABox->m_pCompletionQueue->add(pElement, CompletionQueue::GUESSLIST);
return;
}
if( pX->isPruned() )
return;
applyGuessingRule(pX, pElement->m_pLabel);
}
void CompletionStrategy::applyGuessingRule(Individual* pX, ExprNode* pMC)
{
START_DECOMMENT2("CompletionStrategy::applyGuessingRule");
printExprNodeWComment("X=", pX->m_pName);
printExprNodeWComment("MC=", pMC);
// max(r, n) is in normalized form not(min(p, n + 1))
ExprNode* pMax = (ExprNode*)pMC->m_pArgs[0];
Role* pRole = g_pKB->getRole((ExprNode*)pMax->m_pArgs[0]);
int iN = ((ExprNode*)pMax->m_pArgs[1])->m_iTerm-1;
// obviously if r is a datatype role then there can be no r-predecessor
// and we cannot apply the rule
if( pRole->isDatatypeRole() )
{
END_DECOMMENT("CompletionStrategy::applyGuessingRule");
return;
}
// FIXME instead of doing the following check set a flag when the edge is added
// check that x has to have at least one r neighbor y
// which is blockable and has successor x
// (so y is an inv(r) predecessor of x)
bool bApply = FALSE;
EdgeList edges;
pX->getRPredecessorEdges(pRole->m_pInverse, &edges);
for(EdgeVector::iterator i = edges.m_listEdge.begin(); i != edges.m_listEdge.end(); i++ )